The 64-page document was released after ex-assistant director of organisation and governance Karen Whitmore successfully won her case for unfair dismissal and victimisation after an employment tribunal.

Mrs Whitmore claimed she was “pushed out” after she refused to “cover up” alleged failings over asset sales.

Separate claims of harassment and that Mrs Whitmore suffered as a result of “whistleblowing” were dismissed.

The councillors’ request said the employment tribunal’s judgement highlights “potential and very serious misconduct findings of gross incompetence, deliberately withholding information and misleading elected members” by Mayor Budd and Mr Parkinson.

It states: “We as elected members believe that the actions of Mayor Budd and Mr Parkinson have not only brought Middlesbrough Council into disrepute but have also made their positions untenable.

“As elected members we have been deliberately and knowingly misled and presented with untruths, this preventing us from having any confidence in the aforementioned individuals.”